Ken-chan's first love story begins with Yuki-chan, the girl from the neighboring apartment who has been the object of his affection for a long time. Their relationship blossoms as they share lunch, walk hand in hand to the station, and enjoy every moment together. But Ken-chan's heart is also pulled in another direction—his older sister, Onee-chan, who has always been a presence in his life. Their bond is complicated, full of teasing and playful rivalry, and now, as Ken-chan's first romantic experiences unfold, Onee-chan becomes an unexpected part of his journey.
When Ken-chan finally takes the plunge and shares his first intimate moment with Yuki-chan, he finds himself tangled in a web of emotions. But Onee-chan, ever the playful and sometimes mischievous older sibling, isn’t ready to let her younger brother be content with just one love. She challenges him, teasing him, and even helps him improve his skills—whether he likes it or not. The tension between Ken-chan and Onee-chan builds, especially as he continues to explore his relationship with Yuki-chan.
The two girls, Yuki-chan and Onee-chan, each bring something unique to Ken-chan’s life. Yuki-chan is sweet, gentle, and full of promise, while Onee-chan is bold, confident, and always ready to push him to his limits. As Ken-chan navigates the ups and downs of his relationships, he finds himself torn between two very different but equally compelling women.
The story takes a dramatic turn when Ken-chan's relationship with Yuki-chan deepens, but Onee-chan, ever the competitor, isn’t about to be left behind. Their playful rivalry turns into something more intense, leading to moments of passion, laughter, and even a little bit of pain. Ken-chan’s journey is filled with excitement, tension, and unforgettable memories, all set against the backdrop of their shared home, where every moment feels like an episode of a romantic anime.
From the first time Ken-chan feels the thrill of love to the climax of his emotional and physical journey, this is a story of first loves, sibling rivalry, and the unforgettable experiences that shape a young man’s heart.
